Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K9JCZ callsign genealogy
Currently held by Gilbertson, Dennis A
The FCC publishes a previous_call_sign on
every amateur license — a self-link to the licensee's prior callsign.
Following those links produces the chain below.
Previous callsigns
Older callsigns held by K9JCZ's current licensee, walking backwards.
- GILBERTSON, GARY GWIgranted 2008-06-04cancelled 2009-03-31
Successor callsigns
Callsigns held now by people who previously held K9JCZ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K9JCZ, oldest first.
- Gilbertson, Dennis A WI2004-02-27 → cancelled 2006-07-07
- GILBERTSON, GARY G WI2019-03-07 active